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There are three copper wires of length a...

There are three copper wires of length and cross-sectional area (L,A),(2L,A/2)(L/2,2A). In which case in the resistance minimum?

A

wire of cross-sectional are `(A)/(2)`

B

wire of cross-sectional are A

C

wire of cross-sectional area 2A

D

same is all the three cases

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